





































172 



RHYNCHOPHOEA. 



gment is unimpressed in both sexes. According to Chevrolat x " cette espece vit 



porrect mandibles for part of the rostrum. 









d'excrements humains 



He mistook the 



0. subparallelus has long been known in collections under the name of Mesocordyl 









immundus, Er., a Peruvian insect with the elyt 

 superficially resembles M. memnonius (Fahr.). 



griseo-lep 



It 







Sect. SlPALIDES. 









Sipalides vrais, Lacordaire 















MESOCORDYLUS 







Mesocordylus, Lacordaire, Gen. Col. vii. p. 314 (1866). 





This genus includes the Tropical-American forms placed under Sipalus by Schonherr 

 Six are known to me from within our limits. They may be separated thus : — 





a. Body depressed above, comparatively broad ; rostrum not constricted at the 



base; elytra opaque, in cru state, rather deeply punctate-striate, the interstices 



each with one or two rows of closely placed granules down the middle . . striatus, Boh. 



b. Body more elongate, rather convex, subcylindrical. 



a\ Rostrum not constricted at the base ; elytra finely punctate-striate, the 



interstices each with a widely scattered row of rather large, rounded, 

 griseous spots ; legs very slender gracilis, sp. n. 



b 1 . Rostrum constricted at the base ; legs stouter. 







a\ Elytra faintly striate, the interstices with comparatively large, scattered, 



rounded, griseous or whitish spots, the rest of the surface bare . . . 



b 2 . Elytra uniformly incrustate, finely punctate-striate, the interstices each 



with a row of small vesiculiform spots 



c'\ Elytra rather deeply punctate-striate, the interstices with numerous 



minute griseous spots. 



a\ Rostrum shallowly bisulcate, the griseous spots on the elytra uni- 



seriately arranged laterally 



b 3 . Rostrum not sulcate, the griseous spots on the elytra less numerous 



and more irregularly arranged . , . . . 







subulatus, Germ. 













pustulosus, sp. n 



■ 











bracteolatus, Boh 









dispersus, sp. n. 







1. Mesocordylus striatus. 



(Tab. VIII. figg. 13, 13 a, <j .) 



Sipalus striatus, Boh. in Schonh. Gen. Cure. iv. p. 805 \ 

 Mesocordylus striatus, Lacord. Gen. Col. vii. p ? 315, nota 2 . 



Hab. Panama {Mm. Brit. ; U.S. Nat. Mm.).— South America, Cayei 



I have seen three specimens of this species from Panama, all males 



1 



It 



Peru 



depressed than the allied forms ; the prothorax is strongly rounded 



shorter 



sside, and bare, shining, and rather sparsely punctate on the disc ; the elytra have deep 













. 































